pjs/layout/generic/nsPlaceholderFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsPlaceholderFrame_h___
#define nsPlaceholderFrame_h___
#include "nsFrame.h"
/**
* Implementation of a frame that's used as a placeholder for a frame that
* has been moved out of the flow
*/
class nsPlaceholderFrame : public nsFrame {
public:
/**
* Create a new placeholder frame
*/
friend nsresult NS_NewPlaceholderFrame(nsIFrame** aInstancePtrResult);
// Get/Set the associated out of flow frame
nsIFrame* GetOutOfFlowFrame() const {return mOutOfFlowFrame;}
void SetOutOfFlowFrame(nsIFrame* aFrame) {mOutOfFlowFrame = aFrame;}
// nsIHTMLReflow overrides
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
// nsIFrame overrides
NS_IMETHOD Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer);
NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
/**
* Get the "type" of the frame
*
* @see nsLayoutAtoms::placeholderFrame
*/
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
NS_IMETHOD GetFrameName(nsString& aResult) const;
#ifdef DEBUG
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif
protected:
nsIFrame* mOutOfFlowFrame;
};
#endif /* nsPlaceholderFrame_h___ */